Columbo

A private investigator kills his client's wife after she threatens to expose his blackmail scheme. The client then hires the detective to assist Columbo in the search for the killer.

A famous general kills a business associate, then woos a neurotic female witness to thwart Columbo's investigation.

An art critic, Dale Kingston, kills his uncle for his valuable collection of paintings. All the clues lead to the dead man's first wife. Can Columbo correct the Lieutenant's error before it is too late?

A woman shoots her overbearing brother, claiming she thought he was a burglar. Columbo doesn't buy the self-defense claim - he know's it's murder.

A chemist rigs a bomb in his uncle's car to gain control of his uncle's company, then plants clues to make Columbo suspicious of the company's Vice-President.